Thread: Help me Understand (OpenGL Question)

Code:

int LoadGLTextures()									// Load Bitmaps And Convert To Textures
{
	int Status=FALSE;									// Status Indicator

	AUX_RGBImageRec *TextureImage[1];					// Create Storage Space For The Texture

	memset(TextureImage,0,sizeof(void *)*1);           	// Set The Pointer To NULL

	// Load The Bitmap, Check For Errors, If Bitmap's Not Found Quit
	if (TextureImage[0]=LoadBMP("Data/NeHe.bmp"))
	{
		Status=TRUE;									// Set The Status To TRUE

		glGenTextures(1, &texture[0]);					// Create The Texture

		// Typical Texture Generation Using Data From The Bitmap
		glBindTexture(GL_TEXTURE_2D, texture[0]);
		glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
	}

	if (TextureImage[0])									// If Texture Exists
	{
		if (TextureImage[0]->data)							// If Texture Image Exists
		{
			free(TextureImage[0]->data);					// Free The Texture Image Memory
		}

		free(TextureImage[0]);								// Free The Image Structure
	}

	return Status;										// Return The Status
}

I Know it has something to do with freeing memory up memory for the specific texture, but I don't know exactly how it works step by step, its something I've been looking at for 3 days now, can't seem to catch it :\

Code:

// Load The Bitmap, Check For Errors, If Bitmap's Not Found Quit
	if (TextureImage[0]=LoadBMP("Data/NeHe.bmp"))
	{
		Status=TRUE;									// Set The Status To TRUE

I think, this takes the iArray textureimage[0] and sets it equal to the bitmap "Data/NeHe.bmp", then sets the Status bool to TRUE, which ultimately means the texture was successfully loaded....

Right?

Oh I see, TextureImage is declared as a pointer to the memory store for texture[1]!!! So Every time they refer to TextureImage theyre referring to the bmp I have it set to... Genius! programming is so Genius! (Note to all, Still don't understand most of it)